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CROMAX® TUBE – HARD CHROME-PLATED TUBE

    INFORMATION:

     

    The starting material for Cromax® TUBE is either hot-finished or cold-drawn tube in a microalloyed, low-carbon weldable steel of 20MnV6-type. Cromax Tube exhibits a good combination of strength and toughness along with excellent machinability and weldability.

    SPECIFICATIONS:

     

  • The thickness of the chrome layer is minimum 20 μm
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  • The surface roughness (Ra) is always less than 0.2 µm and normally in the range 0.05-0.15 µm. Rt (ISO) is always less than 2.0 µm and normally in the range 0.5-1.5 µm
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  • The chrome layer hardness is 850 HV0.1min
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  • The maximum deviation is 0.3 mm/1.0 m
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  • The out of roundness is maximized at 50% of the diameter tolerance interval
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  • ISO f8 is standard. Other tolerances can be supplied upon request (narrowest range is ISO level 7)

  • TYPICAL MECHANICAL PROPERTIES:

     

  • Tensile strength (Rm): 550 – 800 MPa
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  • Yield strength(Re): 450 MPa
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  • Elongation (As): 20%
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  • Hardness (HBW): 160 – 240
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  • Resilience (-20°C): 27 J

  • CORRESPONDING STANDARDS:

     

    Below is the closest equivalent standard for the steel in Cromax TUBE.

     

  • CROMAX TUBE
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  • EN 20MnV6
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  • DIN 20MnV6
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  • BS 55M
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  • AFNOR E420
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  • ASTM A572
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    Ovako Cromax is the major manufacturer in Europe of hard-chrome plated products in the form of bar and tube.

STANDARD SIZES (available in stock)
OD x ID (mm)Weight (kg/m)
30 x 203.08
32 x 164.73
35 x 205.09
40 x 285.03
50 x 2810.58
50 x 348.29
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